Compilation problem

Hello, I have a big problem when I want to make a new solution, here is the message that I receive when I complile
Error PLC 0 1 Compilation was not successful. No image will be created.
impossible to continue
can help me
thank you in advance

Help, I have the problem again, I made the first solution in simple mode, then I switched to full mode, and everything worked well until today, impossible to recompile the program
I put the zipped program as an attachment
What's the problem ?
print screen https://www.dropbox.com/s/qe86jwg15qzfjno/unipi.docx?dl=0

@msoenen The issue is that you deleted the definition of the L203 device on the Modbus channel (if you double click on it, you will see that its empty). Delete it and insert a it again. Make sure to set the autogen on the device since you are in full mode (simple mode does that for you).

@msoenen Only the device on the Modbus TCP channel, not the whole PLC.

The proxy configuration looks good. Did you upload the configuration (right click on PLC - PLC operation - PLC setup)? If you are connected to the PLC via the LAN and start the debug mode, check the Proxy information in the System Status.

Hello thanks for the info
help, I have another big problem now
So yesterday, I deleted the modbus channel and I put it back, and it worked
I made some program changes, and I created variables
After a few tries, the physical push buttons stopped working.
-No compilation problem,
-No deployment problem
but the DI_xx.x do not work while the leds of the DI light up when I press.
In debug mode, I manage to change the state of the inputs, so the program runs.
I did :
PLC attach: OK
add channel modbus: ok
add library device: OK
Autogen set: OK
I also tried
configure unipi: OK
update from HW library: OK
upload and dowload configuration

I do not really know what else to do
Here is the program attached with screenshots
Thanks in advance for the help

ok it works, but I was forced to delete the old variables and replace them in the program
it is a pity that there is no table with troublechoottings in which could look during malfunction but without the system does not default